<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 

<html>
    <body>
        <c:forEach var="x" begin="1" end="20" step="2">
            <font size="<c:out value="${x}"/>">Ini Contoh Perulangan</font><br>
        </c:forEach>

    </body>
</html>
